Apparatus for removing the projecting ridges from pressed metal wheels.



R. KRONENBERG.

APPARATUS FOR REMOVING THE PROJEGTING RIDGBS FROM PRBSSBD METAL WHEELS.

APPLICATION TILED JUNE 28,1913.

Patented Dec. 9, 1913.

rr. srarnsr rnnr oer-re- RUDOLF KRONENBERG; OF OHLIGS, GERMANY.

APPARATUS FOR REMOVING THE PROJECTING" RIDGES FROM PRESSEID METALWHEELS.

Specification of Letters Patent.

Patented Dec. 9,1913.

Application filed June 28,1913. Serial No. 776,346.

To all whom it may concern:

llc it known that I, Rrrnonr Knoxnxnmm, subject of the King of Prussia,German Emperor, and resident at Ohligs, in the Province of the Rhine.Kingdom of lirus'sia, German Empire, have invented certain new and.useful Apparatus for Removimg the Projecting Ridges from Pressed MetallVheels, of which the following is a specification.

It is already custol'nary to construct a spoke body for wheels bypressing two half bodies out of sheet iron and then uniting them bysoldering or welding. In both cases, it is necessary to cause the wheelhalves to lit exactly one upon the other and to come uniformly intocontact throughout the symmetric plane. In order to ellect this, the twowheel halves have usually been worked with cutting tools. This operationis however very tedious and correspomlingly expensive in comparison withthe much simpler method employed with the apparatus herein described.

A ccording to this invention after the pressing of the half spoke bodiesand the stamp inn out of the superfluous material between the spokes theridges left standingon these spokes are removed by means of a shearingdevice. For this operation, use is made of a double edged shearingknifewhich is guided parallel to each spoke axis above the two lower knives,between which the spoke is bedded exactly in the plane of the cutting.

The operation can best be, described in connection with the accompanyingdrawing which illustrates the apparatus adapted for carrying out theaforesaid method. Preferably, use is made of a shaping machine for thispurpose, upon the working table of which the spoke body is held and thesliding head of which carries the shearing knife. The table is of aconstruction adapted to facilitate the holding of the complete spokebody.

In these drawings: Figure 1 shows a longitudinal section through theholding devi e, and a side elevation of the slide with the shearingknife. Fig. 2 shows a plan view of the holding device. Fig. 3 shows atransverse section through the lower knives and their supports. Fig. 4shows a front elevation of the shearing tool. Fig. 5 shows the uppershearing knife in plan view.

In these drawings a indicates the table of the machine, .7) the workingslide with the head 0 for clamping the tool holder (Z. Upon the table ais attached the support 1: for the two lower knives These knives arespaced from on! another for the receptionof a spoke g. The spoke body isrevolublc about the screw bolt 11 which passes through a central opening/z.. F or the adjustment of the work to the lower knives there providedthe part- 1', which extends longitudinally from the central bolt h tothe spoke to be sheared, and is held fast at this end by means of asuitable clamp. In the present instance, the end of the holder '1' whichis turned toward the middle is :t'orked, so that it can be pushed underthe head of the screw 11. At the outer end. the holder 1' is sloped oil.in the form of. a double wcdgrc, so that it can be depressed by meansof a rcvoluble hand lever 7.: provided with corresponding slopingportions. At the same time, the screw /1 is tightened whereupon thespoke to be operated upon rests firmly against the lower knives f.Hereupon, the double edged upper knife Z passes from the middleof thespoke body over the spoke which is held fast and thereby cuts off theprojecting ridges at both sides exactly and smoothly. In order that theknife may also operate on the part of the spoke which widens toward thehub, it is correspondingly formed in the shape of a lance head as shownin Fig. 5, of the drawing.

The operation renders possible a much quicker cutting of the spoke bodythan has hitherto been attainable by cutting tools. The cut is alwaysexactly in the junction plane, so that the halves [it exactly one uponthe other and make uni-form contact throughout. By this means, theilastening together is materially facilitated.

Having now described my invention, what I claim and desire to secure, is

1. In a device of the character described, a support, a slide movablethereon, a head on said slide, a tool holder clamped by said head, a.double edged knife on said slide, clamps on said support to adjustablyhold the outer end of each spoke when operated on, and a headed bolt toadjustably engage a slot in the spoke body.

2. Apparatus of the character described comprising a support, a slide onsaid support. a head on said slide, a tool holder clamped by said head,two spaced knives on said support to receive a spoke between them, avertical headed bolt on said support, a spoke holder adapted to beclamped at its inner end by pushing the spoke body finder name to, thisspecification in the presence of the headrof said bolt and at its outerend by two subscribing Witnesses. a revoluble hand lever adapted to en a'e that end, a double edged upper knife ad ap i- RUDOLF KROA ENBERG' 5ed to be moved to cut off the projecting Witnesses:

ridges of said spoke. LOUIS VANDORY,

In testimony, whereof I have signed my EMMA S. BRINTON.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, .D. G.

